Index: sys/x86/x86/mca.c =================================================================== --- sys/x86/x86/mca.c +++ sys/x86/x86/mca.c @@ -653,7 +653,7 @@ * count of the number of valid MC records found. */ static int -mca_scan(enum scan_mode mode) +mca_scan(enum scan_mode mode, int *recoverablep) { struct mca_record rec; uint64_t mcg_cap, ucmask; @@ -704,7 +704,9 @@ } if (mode == POLLED) mca_fill_freelist(); - return (mode == MCE ? recoverable : count); + if (recoverablep != NULL) + *recoverablep = recoverable; + return (count); } /* @@ -726,7 +728,7 @@ CPU_FOREACH(cpu) { sched_bind(td, cpu); thread_unlock(td); - count += mca_scan(POLLED); + count += mca_scan(POLLED, NULL); thread_lock(td); sched_unbind(td); } @@ -1150,7 +1152,7 @@ mca_intr(void) { uint64_t mcg_status; - int old_count, recoverable; + int recoverable, count; if (!(cpu_feature & CPUID_MCA)) { /* @@ -1164,8 +1166,7 @@ } /* Scan the banks and check for any non-recoverable errors. */ - old_count = mca_count; - recoverable = mca_scan(MCE); + count = mca_scan(MCE, &recoverable); mcg_status = rdmsr(MSR_MCG_STATUS); if (!(mcg_status & MCG_STATUS_RIPV)) recoverable = 0; @@ -1177,7 +1178,7 @@ * on all CPUs, but only certain CPUs will find a valid * bank to log. */ - while (mca_count == old_count) + while (count == 0) cpu_spinwait(); panic("Unrecoverable machine check exception"); @@ -1199,7 +1200,7 @@ * Serialize MCA bank scanning to prevent collisions from * sibling threads. */ - count = mca_scan(CMCI); + count = mca_scan(CMCI, NULL); /* If we found anything, log them to the console. */ if (count != 0) {